Use the Add Metro or
Global Mirror Relationships in the Create
Consistency Group wizard to select the Metro
Mirror or Global Mirror relationships
to add to the consistency
group.
Introduction
A
new consistency group inherits the state and copy direction of the
first relationship
that you add to it. For example, if the first relationship that you
add to
the group has a copy direction of master to auxiliary, any other relationship
that you add to the group must have the same copy direction.
If
you
do not select any relationships, an empty consistency group is created.
You
can add relationships to an empty group at a later
time by
selecting the Modify a relationship action from the Metro Mirror and
Global Mirror
Consistency Groups panel.
Attributes
The
following attributes for each relationship are displayed in the table:
- Select
- Allows you to select the relationship
to add to this consistency
group.
- Name
- The name of the relationship.
You can click on the link in this column
to display detailed information about the relationship.
- Copy Type
- Indicates the copy type of the relationship.
The following types are possible:
- Master VDisk
- The name of the master
virtual disk (VDisk) in the relationship.
- Auxiliary
Cluster Name
- The name of the cluster that contains the auxiliary
VDisk in the relationship.
- Auxiliary VDisk
- The name of the auxiliary VDisk in the relationship.
- Primary
- Indicates which VDisk is the primary
VDisk. The following values are possible:
- State
- Indicates the state of the relationship.
The following states are possible:
- Inconsistent Stopped
- The primary VDisk is
accessible for read and write operations but the
secondary VDisk is not accessible for either. A copy process needs
to be started
to make the Secondary VDisk consistent.
- Inconsistent
Copying
- The primary VDisk is accessible for
read and write operations
but the secondary VDisk is not accessible for either. This state is
entered
after a Start command is issued to a consistency
group that is in the InconsistentStopped state. This state is also
entered
when a Start command is issued with the
force option
to a consistency group that is in the Idling or ConsistentStopped
state.
- Consistent Stopped
- The secondary
VDisk contains a consistent image, but
it
might be out-of-date with the primary VDisk. This state can occur
when a relationship
is in the ConsistentSynchronized state and experiences an error that
forces
a freeze of the consistency group. This state can also occur when
a relationship
is created with the CreateConsistentFlag set to TRUE.
- Consistent Synchronized
- The primary
VDisk is accessible for read and write operations. The secondary
VDisk is accessible for read-only I/O operations.
- Idling
- The master VDisks and auxiliary VDisks
are operating in the primary role.
Therefore, both VDisks are accessible for write operations.
- Idling Disconnected
- The VDisks in this
half of the consistency group are all operating in
the primary role and can accept read or write operations.
- Inconsistent Disconnected
- The VDisks in this
half of the consistency group are all operating in
the secondary role and cannot accept read or write operations.
- Consistent Disconnected
- The
VDisks in this half of the consistency group are all
operating in the secondary role and can accept read operations but
cannot
accept write operations.
- Empty
- The
consistency group does not contain any Metro
Mirror or Global Mirror relationships.
Actions
The
following actions are available:
- Back
- Click
this button to return to the previous wizard panel.
- Next
- Click this button after you have completed
this panel.
- Cancel
- Click this button
to exit this wizard without creating a consistency group.